Ol Activation (Compressor Overload) - Daikin SUPER MULTI NX CTXS07JVJU Service Manual

SiUS12-928_B
6.7

OL Activation (Compressor Overload)

E5
Remote
Controller
Display
Outdoor Unit LED A 5
Display
Method of
A compressor overload is detected through compressor OL.
Malfunction
Detection
 If the error repeats, the system is shut down.
Malfunction
 Reset condition: Continuous run for about 60 minutes without any other error
Decision
 The operating temperature condition is not specified.
Conditions
 Defective discharge pipe thermistor
Supposed
 Defective outdoor electronic expansion valve or coil
Causes
 Defective four way valve or coil
 Defective outdoor unit PCB
 Refrigerant shortage
 Water mixed in refrigerant
 Defective stop valve
Troubleshooting
Check No.01
Refer to P.191
Check No.12
Refer to P.194
Check No.13
Refer to P.195
Check No.14
Refer to P.195
Service Diagnosis
1 4 2 3 3 4 4 3
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Discharge pipe
thermistor disconnected?
NO
Check No. 01
Check the thermistors.
OK
Check No. 12
Check the outdoor electronic
expansion valve coil.
OK
Check No. 13
Check the four-way valve.
OK
Check No. 14
Check the refrigerant line.
OK
YES
NG
* Discharge pipe thermistor
NG
NG
NG
* Refrigerant shortage
* Water mixed
* Stop valve
Troubleshooting for Outdoor Unit
Insert the thermistor in
position.
Replace the discharge pipe
thermistor.
Replace the outdoor
electronic expansion valve
or the coil.
Replace the four-way valve or
the coil.
Replace the outdoor unit PCB.
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
(R14438)
166